/Engine/Plugins/Runtime/Metasound/Source/MetasoundFrontend/Public/MetasoundFrontendDocumentBuilder.h
bool SwapGraphInput ( const [FMetasoundFrontendClassVertex](API\Plugins\MetasoundFrontend\FMetasoundFrontendClassVertex) & InExistingInputVertex, const [FMetasoundFrontendClassVertex](API\Plugins\MetasoundFrontend\FMetasoundFrontendClassVertex) & NewInputVertex )